Abstract:
:Glycopyrronium bromide (GB) is a muscarinic receptor antagonist that has been used as a long-acting bronchodilator in chronic obstructive pulmonary disease (COPD) patients. The aim of this study was to investigate the anti-inflammatory activity of inhaled GB in a cigarette smoke-induced acute lung inflammation mouse model. We found that aerosol pre-treatment with GB suppresses the accumulation of neutrophils and macrophages in the bronchoalveolar lavage fluid (BALF) in cigarette smoke (CS)-exposed mice. GB at doses of 300 and 600 μg/ml significantly inhibited the CS-induced increases in the mRNA and protein expression levels of interleukin (IL)-1β, tumor necrosis factor (TNF)-α, monocyte chemotactic protein (MCP)-1 and transforming growth factor (TGF)-β1 in lung tissues and the BALF. Moreover, GB at a dose of 600 μg/ml significantly inhibited the CS-induced changes in glutathione (GSH) and myeloperoxidase (MPO) activities in the BALF, decreased the CS-induced expression of matrix metalloproteinases (MMP)-9, and increased the CS-induced expression of tissue inhibitor of metalloproteinases (TIMP)-1, as determined through the immunohistochemical staining of lung tissue. Our results demonstrate the beneficial effects of inhaled GB on the inflammatory reaction in COPD.
journal_name
Int Immunopharmacoljournal_title
International immunopharmacologyauthors
Shen LL,Liu YN,Shen HJ,Wen C,Jia YL,Dong XW,Jin F,Chen XP,Sun Y,Xie QMdoi
10.1016/j.intimp.2013.12.021subject
Has Abstractpub_date
2014-02-01 00:00:00pages
358-64issue
2eissn
1567-5769issn
1878-1705pii
S1567-5769(13)00510-9journal_volume
18pub_type
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